Not all planters are winterproof. Buckets made of wood and ceramics in particular can be damaged by frost. It is therefore important to protect them as best as possible.Ceramic planters can break quickly in winter
In spring and especially in summer, abundantly flowering and greening plants in tubs are a source of joy and beautify gardens, terraces and balconies.
As soon as the temperatures drop towards zero at night, you should think about how you can protect not only your plants from the first frost (see tips at winterschutz.de), but also the planters. After all, you want to populate the boxes with flowering plants again in early spring.
Differences in material
When moisture freezes in the earth, it expands. With some materials, this can cause the bucket to burst. For example, this is particularly the case with ceramic tubs.
Even wood will not survive winter without damage without care and preparation. Wood is a natural material and must be regularly painted with a protective glaze.
Plant pots made of fiberglass (a mixture of glass fiber mats and plastic) are best suited. These are particularly stable, weather-resistant and UV-resistant (source: plantskuebel-direkt.de)
The biggest advantage in comparison to buckets made of stainless steel, terracotta and concrete is the relatively low weight. This way you can also easily transport the large plants.
Basic rules for wintering
In principle, of course, only those plants that are declared hardy may remain outside. The following rules apply to these plants:
❶ Create drain for the irrigation water
Make sure that irrigation water is always able to drain down. To do this, you have to drill holes in the bottom of the container before planting. If the irrigation water cannot drain, the flower pots freeze.
Kontrollieren Check drainage
Check whether the drainage in the flower pot works well. It is best to put a layer of pebbles on the floor. The plant pot should be filled with the drainage at least up to a tenth of its height.
A shard of clay in front of the drain hole can also be very helpful here. In the video from helpster.de you will find more detailed information on the topic “Drainage in flower pots”.
Stellen Raise the bucket
In principle, your plants should not stand directly on the ground in winter, as this will prevent the water from draining properly. The otherwise typical coasters are not a better solution in winter. Too much water can collect here in rain or melted snow, which quickly freezes over night.
So it's best to put the buckets up. Chairs, stools or other winter-proof frames are suitable for this.
❹ Protect buckets in the event of very heavy frost
At extremely low temperatures, it is advisable to wrap the planter yourself with bubble wrap or another insulating material such as fleece. If you want to maintain the natural charm of your garden, you can also use coconut mats, straw mats or jute felt.
❺ Cover potting soil
Cover the earth with straw, leaves or special cover mats to protect the plants from severe frost.
Tips for the wintering of non-hardy plants
For plants that are not hardy, other preparations must be made. A frost-proof place with enough windows, for example a winter garden or a bright garage are ideal for this.
Non-hardy plants should not be left outside and should not be exposed to temperatures below the freezing limit. A basement room with neon light or similar does not work because the plants need real daylight. In addition, there must be enough space between the planters so that they can still be supplied with water. It is usually sufficient to water the plants once a week.